they can be mounted, or they could come out at different lengths. >> so you could screw this on to enormous shower? >> as long as they can rotate. some of them are fixed flat. >> that is terrific. thank you for joining us today for "building san francisco" and we hope to see you on the third wednesday of every month. sometimes we do leches with guests in our studio. please join us, and you can get more information that sfgov.org. it is a wonderful day, and i'm going to go get a burrito.